Books don't actually "enter" collections. rather they have the label of also belonging to that collection of books have the label "Whatever". IIRC

So this is a calibre import-export question really. Looks like the tags are getting mushed together. I have never used this for/with Calibre export but recall something about either custom fields being missing, or being needed to be setup. Sorry that is all I can dredge. I'm not even 100% about that...

I recall Niluje and Ixtab chatting about this (or a very similar) subject a while ago, perhaps they will have something actually helpful to add.

I really need help. I simply cannot push that button for 2 seconds. It does not detect my touch.

First: why did you post this here, instead of the jailbreak thread?
Second: check that your firmware is 5.2.0, 5.3.0, or 5.3.1 (Settings - Device Info). If it's newer, downgrade. That is all documented in the jailbreak thread.